
IONX Networks, formerly Dense Air, is a telecommunications company focused on expanding and densifying 4G and 5G mobile networks through shared small cell technology. They offer fully managed in-building cellular services for property owners and occupiers, ensuring seamless connectivity for tenants and guests by improving mobile operator coverage and capacity. Additionally, IONX provides a Neutral Host Platform-as-a-Service for infrastructure partners to deploy mobile services in cities and communities, enabling them to optimize and expand asset utilization. The company leverages AI and big data insights for network analytics and optimization, aiming to create a more open, inclusive, and always connected future. They have pioneered shared and licensed spectrum technologies, including CBRS, and have filed 10 patents across telecommunications software and hardware. With 122 employees strategically located across the U.S. and U.K., IONX focuses on delivering scalable, resilient, and shared mobile infrastructure.

IONX Networks, formerly Dense Air, is a telecommunications company focused on expanding and densifying 4G and 5G mobile networks through shared small cell technology. They offer fully managed in-building cellular services for property owners and occupiers, ensuring seamless connectivity for tenants and guests by improving mobile operator coverage and capacity. Additionally, IONX provides a Neutral Host Platform-as-a-Service for infrastructure partners to deploy mobile services in cities and communities, enabling them to optimize and expand asset utilization. The company leverages AI and big data insights for network analytics and optimization, aiming to create a more open, inclusive, and always connected future. They have pioneered shared and licensed spectrum technologies, including CBRS, and have filed 10 patents across telecommunications software and hardware. With 122 employees strategically located across the U.S. and U.K., IONX focuses on delivering scalable, resilient, and shared mobile infrastructure.
Core offering: Shared small cell and neutral-host infrastructure for 4G/5G network densification
Founded / HQ: 2017; Marlow, Buckinghamshire, United Kingdom
Acquisition / change: Site redirects to IONX Networks; company referenced as IONX Networks (rebranding or integration)
Public funding signal: Received a grant (Future RAN competition) in Dec 2021
Mobile network densification and shared wireless infrastructure to address coverage and capacity limits in buildings and dense urban areas.
2017
Telecommunications
Future RAN competition grant
Recorded acquisition by Sidewalk Infrastructure Partners